REL
PDBe
PDBe
PDBe
2014-08-12
2014-09-10
2014-09-10
2014-10-22
Electron cryo-tomography of Campylobacter jejuni
Muller A
Beeby M
McDowall AW
Chow J
Jensen GJ
Clemons WM
food poisoning, cryo electron tomography, cryo-EM, chemoreceptors, acidocalcisomes
Muller A
Beeby M
McDowall AW
Chow J
Jensen GJ
Clemons WM
Ultrastructure and complex polar architecture of the human pathogen Campylobacter jejuni.
Microbiologyopen
3
702
710
2014
25065852
doi:10.1002/mbo3.200
Campylobacter jejuni subsp. jejuni ATCC 29428 (whole bacterial cells)
Campylobacter jejuni subsp. jejuni ATCC 29428 (whole bacterial cells)
1
Campylobacter jejuni
2
false
Campylobacter jejuni
ATCC 29428
Campylobacter jejuni
tomography
cell
Quantifoil
ETHANE-PROPANE MIXTURE
100
77
FEI VITROBOT MARK III
Sample preparation closely followed established procedures (Iancu et al., 2007). In brief: 4 microlitres of a 10 nm colloidal gold (Sigma, USA) in 5% BSA was added to 16 microlitres of a C. jejuni culture that had been allowed to grow to an optical density of 0.5. 3 microlitres of this mix were then placed onto a glow discharged carbon-coated R 2/2 Quantifoil grid in a Vitrobot (FEI Company, Hillsboro, OR, USA). Prior to this a 10 nm colloidal gold suspension in 5% BSA solution was added to the Quantifoil grid and allowed to dry. The temperature in the Vitrobot chamber was kept at 22 degrees Celsius with 100% humidity. Placing the sample onto the grid was followed by a 1 second blot with an offset of -1.5 degrees, a drain time of 1 second, and plunge-frozen in a mixture of liquid ethane (63%) and propane (37%). The frozen grids were than stored in liquid nitrogen until further use.
FEI POLARA 300
OTHER
BRIGHT FIELD
FIELD EMISSION GUN
300
2.2
-12.0
22500.0
GATAN HELIUM
76.9
77.1
77
GATAN GIF
0.0
20.0
Camera post-energy filter
2014-01-01
121
200
16.
Liquid nitrogen cooled
-60
60
1
Single-axis tilt series from -60 degrees to 60 degrees with images were collected in 1 degree increments and an under-focus of 12 microns using a 300 keV FEI Polara FEG TEM controlled by Leginon software (Suloway et al., 2009) and the cumulative dose was not allowed to exceed 200 e A2. The images were recorded on a 4096 x 4096 pixel Ultracam (Gatan, Pleasanton, CA, USA) at a magnification of 22500 (0.98 nm/pixel). The IMOD software package (Kremer et al., 1996) was used to calculate 3D reconstructions.
OTHER
IMOD, tomo3d
SIRT reconstruction of a fine-aligned stack low-pass filtered to first zero at approximately 5.5 nanometres.
121